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Bayport
MMT Pro Member
Joined: Mon Jan 26, 2009 12:51 pm Posts: 151
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23.5 Kholer RPMs under load
Longtail on 14x36 w pods. Had a 9x7 prop that I broke. Was getting about 3520 under load and 29 mph w 2 guys Spoke w Backwater and they suggested the 9x6 for that boat and motor. Now turning 3750 under load to get same MPH. Not really concerned about the 1-2 MPH difference but it seems that this prop also is not very good in thick lilly pads.
My question, is that RPM too much for that motor?
I talked w backwater and they said I can send it back and get the 9x7...
I know, seems like no brainer but wanted to ask of those a lot more experienced that me. Thx
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Fri Jan 05, 2018 9:15 am |
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CypressCritter
MMT F.E.
Joined: Tue Aug 26, 2014 10:36 am Posts: 822 Location: Jefferson TX
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Re: 23.5 Kholer RPMs under load
At WFO, your motor should be at 3600-4000 if stock and boat not overloaded. The lilly pad thing could be the prop?? Back in the day, for veggies I ran a 2 blade 9x4, for the no veggie thing I had a 3blade 9x3, it ran a little faster but with less rpms. Don't know if that helps but that was my experience.
_________________ SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac) Uncle J Custom - 19x54 CC Skiff w/40XD GTR
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Fri Jan 05, 2018 9:36 am |
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Bayport
MMT Pro Member
Joined: Mon Jan 26, 2009 12:51 pm Posts: 151
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Re: 23.5 Kholer RPMs under load
I get 4000-4100 wot out of water thx
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Fri Jan 05, 2018 9:41 am |
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CypressCritter
MMT F.E.
Joined: Tue Aug 26, 2014 10:36 am Posts: 822 Location: Jefferson TX
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Re: 23.5 Kholer RPMs under load
_________________ SEAARK FX 2472 CC Merc 150HP 4Stroke(CypressCadillac) Uncle J Custom - 19x54 CC Skiff w/40XD GTR
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Fri Jan 05, 2018 9:43 am |
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brycecheramie
MMT 1000 Club
Joined: Thu Nov 04, 2010 7:38 am Posts: 4323 Location: Cut Off, La.
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Re: 23.5 Kholer RPMs under load
Am I the only MF'er that wants to see a video of this 23hp, 29mph longtail with 2 people?!
_________________ Refurbishing a Prodrive
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Fri Jan 05, 2018 10:12 am |
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Bayport
MMT Pro Member
Joined: Mon Jan 26, 2009 12:51 pm Posts: 151
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Re: 23.5 Kholer RPMs under load
WHOAH!!!!!!!!!!! that should be 19 not 29 Sheesh sorry
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Fri Jan 05, 2018 11:05 am |
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brycecheramie
MMT 1000 Club
Joined: Thu Nov 04, 2010 7:38 am Posts: 4323 Location: Cut Off, La.
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Re: 23.5 Kholer RPMs under load
_________________ Refurbishing a Prodrive
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Fri Jan 05, 2018 11:07 am |
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nuccifish06
MMT Pro Member
Joined: Tue Sep 16, 2014 6:36 pm Posts: 108 Location: Sunrise, FL
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Re: 23.5 Kholer RPMs under load
_________________ 1438 Jon / 23hp MBLT
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Fri Jan 05, 2018 11:36 am |
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50fps
MMT 1000 Club
Joined: Tue Jan 13, 2009 6:42 pm Posts: 2377 Location: West Coast Wisconsin
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Re: 23.5 Kholer RPMs under load
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Fri Jan 05, 2018 12:40 pm |
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Bayport
MMT Pro Member
Joined: Mon Jan 26, 2009 12:51 pm Posts: 151
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Re: 23.5 Kholer RPMs under load
that is what happened. picked up RPM but lost speed...need more RPM for the same speed. My Q is...can that motor run at 3800 under load or is that too much for it? In reviewing in the past I heard 3600.
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Fri Jan 05, 2018 12:50 pm |
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brycecheramie
MMT 1000 Club
Joined: Thu Nov 04, 2010 7:38 am Posts: 4323 Location: Cut Off, La.
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Re: 23.5 Kholer RPMs under load
_________________ Refurbishing a Prodrive
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Fri Jan 05, 2018 1:12 pm |
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Bayport
MMT Pro Member
Joined: Mon Jan 26, 2009 12:51 pm Posts: 151
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Re: 23.5 Kholer RPMs under load
ok great thx
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Fri Jan 05, 2018 1:20 pm |
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